Phosphor-free white light-emitting diode with laterally distributed multiple quantum wells

Il Kyu Park; Ja Yeon Kim; Min Ki Kwon; Chu Young Cho; Jae Hong Lim; Seong Ju Park

doi:10.1063/1.2890492

Phosphor-free white light-emitting diode with laterally distributed multiple quantum wells

Il Kyu Park, Ja Yeon Kim, Min Ki Kwon, Chu Young Cho, Jae Hong Lim, Seong Ju Park

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

A phosphor-free white light-emitting diode (LED) was fabricated with laterally distributed blue and green InGaNGaN multiple quantum wells (MQWs) grown by a selective area growth method. Photoluminescence and electroluminescence (EL) spectra of the LED showed emission peaks corresponding to the individual blue and green MQWs. The integrated EL intensity ratio of green to blue emission varied from 2.5 to 6.5 with the injection current below 300 mA, but remained constant at high injection currents above 300 mA. The stability of the emission color at high currents is attributed to parallel carrier injection into both MQWs.

Original language	English
Article number	091110
Journal	Applied Physics Letters
Volume	92
Issue number	9
DOIs	https://doi.org/10.1063/1.2890492
State	Published - 2008

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title = "Phosphor-free white light-emitting diode with laterally distributed multiple quantum wells",

abstract = "A phosphor-free white light-emitting diode (LED) was fabricated with laterally distributed blue and green InGaNGaN multiple quantum wells (MQWs) grown by a selective area growth method. Photoluminescence and electroluminescence (EL) spectra of the LED showed emission peaks corresponding to the individual blue and green MQWs. The integrated EL intensity ratio of green to blue emission varied from 2.5 to 6.5 with the injection current below 300 mA, but remained constant at high injection currents above 300 mA. The stability of the emission color at high currents is attributed to parallel carrier injection into both MQWs.",

author = "Park, \{Il Kyu\} and Kim, \{Ja Yeon\} and Kwon, \{Min Ki\} and Cho, \{Chu Young\} and Lim, \{Jae Hong\} and Park, \{Seong Ju\}",

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doi = "10.1063/1.2890492",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

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T1 - Phosphor-free white light-emitting diode with laterally distributed multiple quantum wells

AU - Park, Il Kyu

AU - Kim, Ja Yeon

AU - Kwon, Min Ki

AU - Cho, Chu Young

AU - Lim, Jae Hong

AU - Park, Seong Ju

PY - 2008

Y1 - 2008

N2 - A phosphor-free white light-emitting diode (LED) was fabricated with laterally distributed blue and green InGaNGaN multiple quantum wells (MQWs) grown by a selective area growth method. Photoluminescence and electroluminescence (EL) spectra of the LED showed emission peaks corresponding to the individual blue and green MQWs. The integrated EL intensity ratio of green to blue emission varied from 2.5 to 6.5 with the injection current below 300 mA, but remained constant at high injection currents above 300 mA. The stability of the emission color at high currents is attributed to parallel carrier injection into both MQWs.

AB - A phosphor-free white light-emitting diode (LED) was fabricated with laterally distributed blue and green InGaNGaN multiple quantum wells (MQWs) grown by a selective area growth method. Photoluminescence and electroluminescence (EL) spectra of the LED showed emission peaks corresponding to the individual blue and green MQWs. The integrated EL intensity ratio of green to blue emission varied from 2.5 to 6.5 with the injection current below 300 mA, but remained constant at high injection currents above 300 mA. The stability of the emission color at high currents is attributed to parallel carrier injection into both MQWs.

UR - http://www.scopus.com/inward/record.url?scp=40549110997&partnerID=8YFLogxK

U2 - 10.1063/1.2890492

DO - 10.1063/1.2890492

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SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

M1 - 091110

ER -

Phosphor-free white light-emitting diode with laterally distributed multiple quantum wells

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